Know Your Environment. Protect Your Health.

Chloromethane

Mesa Grande Water Supply Corporation

Chloromethane is an industrial solvent, aerosol propellant and a refrigerant. It also forms as a byproduct of water disinfection. The EPA classifies chloromethane as possibly carcinogenic to humans.

 

10

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
2019ND20ND
2020ND20ND
2021ND20ND
2022N/A00N/A
2023ND20ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 2.69 ppb

The EWG Health Guideline of 2.69 ppb for chloromethane was defined by the Environmental Protection Agency as a benchmark for testing under the Unregulated Contaminant Monitoring Rule program. This health guideline protects against cancer.

ppb = parts per billion

All test results

Date Lab ID Result
2018-10-01Q1838902008ND
2018-10-01Q1838902010ND
2019-09-23Q1967401003ND
2019-09-23Q1967401005ND
2020-08-03Q2030173001ND
2020-08-03Q2030173003ND
2021-06-03Q2114421006ND
2021-06-03Q2114421010ND
2023-11-21Q2350122001ND
2023-11-21Q2350122003ND